Rat control and extermination of rats in MN and WI.
American Pest Solutions

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Norway rats are primarily nocturnal. They usually become active about dusk, when they begin to seek food and water. Some individuals may be active during daylight hours when rat populations are high. Rats have poor eyesight, relying more on their hearing and their excellent senses of smell, taste, and touch. They are considered color-blind. Rats use their keen sense of smell to locate food items and to recognize other rats. Norway rats usually construct nests in below-ground burrows or at ground level. Nests may be lined with shredded paper, cloth, or other fibrous material. Litters of 6 to 12 young are born 21 to 23 days after conception. Newborn rats are hairless and their eyes are closed, but they grow rapidly. They become completely independent at about 3 to 4 weeks andreach reproductive maturity at 3 months of age. Females may come into heat every 4 or 5 days, and they may mate within a day or two after a litter is born. Breeding often peaks in spring and fall, with reproductive activity declining during the heat of summer and often stopping completely in winter, depending on habitat. The average female rat has 4 to 6 litters per year and may successfully wean 20 or more offspring annually.
Rats can be difficult to get under control. To be sure the entire colony is taken care of you should call a professional.
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